Instead of a Halo-style 3D avatar, Cortana will be represented by a pair of spinning blue circles. We see them in that “listening” screen up top, and again in one setup shot down below. The “Notebook” that gets mentioned down there is supposed to be a key component of the service, letting you store personal information that Cortana may take advantage of, while also giving users the ability to limit how much private data is accessible to Microsoft’s servers.

We also see that Cortana will be customizable so far as how it addresses you, and while you could go cut-and-dry and have it use your real name, nicknames can easily be set up – and yes, since everyone was wondering, that includes the ability to have Cortana refer to you as Master Chief. Just don’t let it go to your head.